diff --git a/package.json b/package.json
index 3197fc0..998bc6e 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
   "dependencies": {
     "@docusaurus/core": "^3.9.2",
     "@docusaurus/preset-classic": "^3.9.2",
+    "@docusaurus/theme-mermaid": "^3.9.2",
     "@easyops-cn/docusaurus-search-local": "^0.52.1",
     "clsx": "^2.1.1",
     "docusaurus-plugin-image-zoom": "^3.0.1",